12804519971 has 2 divisors, whose sum is σ = 12804519972. Its totient is φ = 12804519970.

The previous prime is 12804519947. The next prime is 12804520021. The reversal of 12804519971 is 17991540821.

It is a weak prime.

It is an emirp because it is prime and its reverse (17991540821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12804519971 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12804519571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6402259985 + 6402259986.

It is an arithmetic number, because the mean of its divisors is an integer number (6402259986).

Almost surely, 2^12804519971 is an apocalyptic number.

12804519971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12804519971 is an equidigital number, since it uses as much as digits as its factorization.

12804519971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 47.

The spelling of 12804519971 in words is "twelve billion, eight hundred four million, five hundred nineteen thousand, nine hundred seventy-one".